MATE ROV Design Safety'16

Transcript

2. Ahmed Sobhy Vice Chair IEEE RAS Egypt Chapter Co-founder - Qafeer Makerspace CEO - GDG 6 October & Robosapien Robotics www.sobhy.me
3. 3 Technical sponsors
4. ROV 2016 safety inspection
6. SAFETY !! Safety is the competition’s primary concern and guiding principle. Any system that is deemed unsafe by competition officials will not be allowed to compete. If a safety concern is identified during the initial inspection, companies are permitted to modify their system and have it re-inspected. Companies are permitted to have their vehicle re-inspected twice. If a company fails to pass its third and final safety inspection, it is disqualified from the underwater competition portion of the event. There are NO APPEALS once an ROV has been disqualified.
7. Examples of safety violations from previous ROV competitions include: • The electrical SID included in the technical documentation did not show a main fuse or circuit breaker. • The ROV used pneumatics, but the technical documentation did not include a pneumatics diagram. • The ROV used pneumatics, but the company had not passed the fluid power quiz two weeks prior to the competition.
8. NEW in 2016!!! Penalty points • Companies do NOT submit the company spec sheet and SID by May 1st , 2016. • The SID does not show a fuse or a fuse that does not use an ANSI, NEMA or IEC symbol. • The vehicle uses fluid power, but a fluid power diagram is not included. • The company spec sheet and technical documentation is not submitted in a searchable PDF format. • Technical documentation over 8MB in size. • Fuse calculations are not shown on the SID.
9. What !! .. ANSI, NEMA or IEC symbol The International Electrotechnical Commission (IEC) American National Standards Institute (ANSI) National Electrical Manufacturers Association (NEMA)
10. Example SID
11. SAFETY CHECK NOTES What shall teams prepare before the check? Electrical schematic with the main fuse shown. The ROV must be as ready with all connections as you are about to fly.
12. Mechanical Notes • All ROV items are well fixed. • No sharp edges. • “Disposable motors” are not permitted; these are exposed motors with no waterproofing. • Propellers MUST be shrouded • You may use warning stickers on your critical points (Thrusters, Manipulators, ....etc). • Multiple vehicles are not permitted.
18. Electrical Notes The water should be considered conductive of electrical currents. Cables: · Single attachment point to power source. · No loose or bare wires. · All wiring and devices properly secured and fastened. · Any splices in tether are properly sealed and soldered. Note that tape is NOT considered an insulator. · All control elements on the pool deck are mounted with wiring inside an enclosure. Fuses: · For explorer class the maximum current you may drain is 40A and for ranger class 25A. You have to use a fuse that doesn't exceed your class limit. · Electrical diagrams must show the fuse or circuit breaker and include the amperage of the over current protection. · The main fuse MUST be within 30 CM from the power attachment point.
19. Power: · All power provided to the ROV system through an external connection for any purpose during the competition must be obtained from the competition power supply. This includes dedicated lines for cameras, manipulators, and any other devices. · The competition will provide proper connectors to its power supply. · The cameras MUST be powered from the ROV not from an adapter. In case of using USB cameras, the same rules applies. · All the power conversion is made inside the ROV itself not on the pool deck. · On-board battery powered devices are NOT allowed under any circumstance. · For safety purposes, any ROV system that is disconnected from the surface supply should stop functioning in less than 5 seconds. This applies to electrical, pneumatic, and hydraulic power sources. Any filters, capacitors or accumulators must be sized accordingly to meet this specification. · The competition will provide an AC source to provide power for pumps and other surface support equipment (e.g. video monitors & control boxes). This AC power source CANNOT be used to directly or indirectly power the vehicle.
20. Laser • Lasers must operate in the visible range at either the 630-680 nm (red) or near the 532 nm (green) wavelength. • All lasers must fall into the Class I, Class II, or Class IIIa category. • Red lasers must operate at 5mW or less. Green lasers must operate at 1mW or less. • Lasers must have an on/off switch. This switch must be on the surface controller. • All lasers must be powered by the MATE surface power supply. Batteries meant to power lasers, are NOT permitted on the vehicle. • Lasers must use the voltage and current set in their specifications. • Operators working with the laser while the ROV is out of the water should wear appropriate laser safety glasses at all times. • Presence of Laser shield or beam stop attachment within 30 cm of laser when out of water.
21. Other · All companies must present a signed safety inspection sheet to the pool practice or mission coordinator before placing their vehicles in the water. In addition, mission station judges and competition officials can pause or stop a mission run at any time if they feel that there is a potential safety concern. · Companies shall finish their safety check prior to their mission run with around half an hour. · You have three trials to pass the safety check. · If the safety inspectors identify a safety violation, companies will have the opportunity to address it. The mission run schedule will NOT change. · If during the third safety review a violation still exists, companies will not be permitted to participate in the underwater missions. · Closed toed shoes is a MUST.